|
KMID : 1022420180100020077
|
|
Phonetics and Speech Sciences
2018 Volume.10 No. 2 p.77 ~ p.84
|
|
|
Characteristics of voice quality on clear versus casual speech in individuals with Parkinson’s disease
|
|
Shin Hui-Baek
Shim Hee-Jeong
Jung Hun
|
|
|
Abstract
|
|
|
|
The purpose of this study is to examine the acoustic characteristics of Parkinsonian speech, with respect to different utterance conditions, by employing acoustic/auditory-perceptual analysis. The subjects of the study were 15 patients (M=7, F=8) with Parkinson’s disease who were asked to read out sentences under different utterance conditions (clear/casual). The sentences read out by each subject were recorded, and the recorded speech was subjected to cepstrum and spectrum analysis using Analysis of Dysphonia in Speech and Voice (ADSV). Additionally, auditory-perceptual evaluation of the recorded speech was conducted with respect to breathiness and loudness. Results indicate that in the case of clear speech, there was a statistically significant increase in the cepstral peak prominence (CPP), and a decrease in the L/H ratio SD (ratio of low to high frequency spectral energy SD) and CPP F0 SD values. In the auditory-perceptual evaluation, a decrease in breathiness and an increase in loudness were noted. Furthermore, CPP was found to be highly correlated to breathiness and loudness. This provides objective evidence of the immediate usefulness of clear speech intervention in improving the voice quality of Parkinsonian speech.
|
|
|
KEYWORD
|
|
|
clear speech, Parkinson’s disease, voice quality, cepstral & spectral measures
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|